Article
Geosciences, Multidisciplinary
Zhengtai Zhang, Kaicun Wang
Summary: This study investigated the variability of surface wind speed in China under different weather regimes, highlighting the significant impacts of the Siberian high pressure and Aleutian low pressure on the wind speed, especially at decadal scales. However, these weather regimes cannot fully explain the decreasing trend of surface wind speed observed in China from 1980 to 2017.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Chao He
Summary: This study shows that the weakened southern branch westerly jet (SWJ) on the southern side of Tibetan Plateau plays a key role in suppressing subtropical East Asian precipitation. Global warming weakens the SWJ, which further acts to suppress precipitation by weakening the southwesterly wind and ascent. The observational constraint on the SWJ-precipitation relationship amplifies the projected drying trend and narrows the intermodel spread.
JOURNAL OF CLIMATE
(2023)
Article
Environmental Sciences
Segolene Berthou, Malcolm J. Roberts, Benoit Vanniere, Nikolina Ban, Danijel Belusic, Cecile Caillaud, Thomas Crocker, Hylke de Vries, Andreas Dobler, Dan Harris, Elizabeth J. Kendon, Oskar Landgren, Colin Manning
Summary: The study simulates climate models and finds that precipitation within extratropical cyclones is very likely to increase towards the end of the century. The models also show that future winter storms will bring more precipitation, with a focus on moderate and heavy rainfall and a decrease in frozen precipitation frequency.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Yuntao Jian, Marco Y. T. Leung, Wen Zhou, Maoqiu Jian, Song Yang
Summary: Most CMIP5/6 models fail to simulate the correct relationship between ENSO and winter synoptic temperature variability (STV) over the Asian-Pacific-American region. The bias in the simulated ENSO-STV relationship can be traced back to the ENSO simulation, with patterns of warm sea surface temperature anomalies resulting in an unrealistic circulation and temperature gradient that affects the simulations of this connection. High pattern score (HPS) models show a robust ENSO-STV relationship in future projections, indicating potential implications for selecting future climate predictors.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Pedro Herrera-Lormendez, Amal John, Herve Douville, Joerg Matschullat
Summary: Projected changes in summer precipitation deficits depend on alterations in synoptic circulations. The ability of 21 global climate models to capture the frequency of recurring circulation types and their implications for European daily precipitation amounts in summer is assessed using the automated Jenkinson-Collison classification. Future changes include a decrease in the frequency of westerlies and an increase in the frequency of easterly circulation types, leading to more continental, dry, and warm air masses over central Europe. These changes are projected to enhance summer drying over central and southern Europe.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Amar Halifa-Marin, Raquel Lorente-Plazas, Enrique Pravia-Sarabia, Juan Pedro Montavez, Pedro Jimenez-Guerrero
Summary: This study examines the recent variability of winter precipitation in Andalusia and its relationship with the Atlantic and Mediterranean sources. Results show a decrease in winter precipitation in most areas, with an increase only observed in southeastern Andalusia. Additionally, the behavior of winter precipitation is influenced by the WeMO index, with a shift in atmospheric patterns towards NAO+ and WeMO- since the 1980s.
ATMOSPHERIC RESEARCH
(2021)
Article
Meteorology & Atmospheric Sciences
Xiaoxue Yin, Lian-Tong Zhou
Summary: This study investigates the interdecadal increase in winter precipitation in northwest China since the late 1980s and the associated moisture flux transport. The results show that changes in moisture flux transport resulted in anomalous moisture transport convergence over NWC. The transition of the EU teleconnection pattern and sea surface temperature warming in the North Atlantic and northwestern Pacific regions also played a role in the interdecadal increase in winter precipitation in NWC.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Huan Wang, Zhiyan Zuo, Liang Qiao, Kaiwen Zhang, Cheng Sun, Dong Xiao, Zouxing Lin, Lulei Bu, Ruonan Zhang
Summary: This study reveals that the variation in the frequency of extreme surface air temperature (SAT) events over Siberia in winter is mainly influenced by the Atlantic Meridional Overturning Circulation (AMOC) rather than human activities. The stronger AMOC increases the variance of winter SAT over Siberia, resulting in more warm and cold extremes. External forcings, such as anthropogenic greenhouse gases, have little impact on the summation of warm and cold extremes. This can be explained by the stronger AMOC stimulating the propagation of wave trains originated in the North Atlantic Ocean, which increases the circulation variabilities over the Ural blocking region and Siberia, thus affecting the SAT extremes.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Veronika Maslova, Elena Voskresenskaya, Alexander Yurovsky, Mikhail Bardin
Summary: This study analyzed different parameters of winter cyclones in the North Atlantic using NCEP/NCAR reanalysis data, and found that different modes corresponded to the abnormal changes of cyclones in different regions and periods. Spectral analysis identified significant peaks that coincide with key interannual climate signals. Regression analysis identified the teleconnection patterns with the greatest contribution. These findings contribute to a better understanding of the regimes of winter cyclones in the North Atlantic.
THEORETICAL AND APPLIED CLIMATOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Luke Osburn, Pandora Hope, Andrew Dowdy
Summary: This study analyzed hourly precipitation data from eight high-quality gauges in Victoria, Australia from 1958 to 2014 to understand changes in extreme precipitation events. It found a significant increase in the intensity and frequency of extreme precipitation events, particularly during the warm season. The study also highlighted implications for improved planning and resilience against intense rainfall and associated hazards like flash flooding in Australia.
WEATHER AND CLIMATE EXTREMES
(2021)
Article
Meteorology & Atmospheric Sciences
Zhenyuan Cui, Chao He
Summary: This study investigates the decadal trend of synoptic temperature variability in boreal winter from 1980 to 2019, focusing on sharp drops in temperature associated with cold waves. The results show a significant decrease in synoptic-scale temperature variability and the frequency and intensity of rapid cooling events (RCEs) over mid-high latitudes. The weakening of RCEs is connected to a decrease in eddy kinetic energy (EKE), suggesting that reduced transient eddy activities mitigate synoptic-scale temperature variability in winter.
THEORETICAL AND APPLIED CLIMATOLOGY
(2023)
Article
Astronomy & Astrophysics
Yufei Xin, Ge Liu, Yueli Chen
Summary: The study found that snow has a significant impact on the surface heat fluxes over the Tibetan Plateau, leading to changes in sensible and latent heat fluxes. Sensible heat flux decreases rapidly after snowfall, while latent heat flux becomes more active and stronger, persisting for a longer period.
EARTH AND SPACE SCIENCE
(2021)
Article
Environmental Sciences
Guodong Bian, Jianyun Zhang, Mingming Song, Xin Qian, Tiesheng Guan, Guoqing Wang
Summary: This study used 22 global climate models from CMIP6 to investigate future variations in extreme precipitation and temperature in the Huaihe River Basin. The results suggest that future climate change will lead to more frequent and severe floods, emphasizing the need for adaptation strategies to enhance social resilience.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Geography, Physical
S. D. Sanap
Summary: This study focuses on the dynamical linkages between the Arctic Oscillations (AO) and winter precipitation variability over the Indian region. The analysis reveals a dipole pattern in precipitation between the western Himalayas and central India, which is mainly linked with the positive (negative) phase of the AO. The positive (negative) phase of the AO is associated with specific atmospheric dynamics, including the wave train pattern across Europe, the strengthening (weakening and southward movement) of the middle east jet stream, and the anticyclonic (cyclonic) circulation over the Arabian Sea.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Environmental Sciences
Ewa Bogdanowicz, Emilia Karamuz, Renata Julita Romanowicz
Summary: The study focuses on analyzing the flow and precipitation variability over time and space in the River Vistula basin, using multi-purpose statistical analyses. Results show significant changes in winter runoff characteristics, while the behavior of minimum flows in the summer contradicts common perceptions. Additionally, precipitation indexes related to drought formation show no clear trends.